Respiration is a ........ process.

We know that plants are harmed by excess water. However,some plants survive under flooded conditions. How are they able to manage excess water?

Plants do not need specialized respiratory organs because

Why do plants not have respiratory organs?

In terrestrial plants,guard cells differ from other epidermal cells in having:

Select the correct statements from the following regarding gaseous exchange in plants.
$A$. $A$ terrestrial plant has many air spaces between the cells of leaf and root.
$B$. Woody trees have stomata on bark.
$C$. In aerated soil,oxygen dissolved in water enters root tissue by diffusion.
$D$. Vascular bundles provide thin and large surface area for exchange of gases.
$E$. Carbon dioxide and water vapour diffuse into lenticels.